再纯你也纯不过特仑苏
[zài chún nĭ yĕ chún bù guò tè lún sū]
'No Matter How Pure You Are, You Can’t Be Purer Than TeLunSu (a famous brand)' This humorous expression is used to describe something that tries too hard to be pure, innocent, or virtuous, using a play on words involving a dairy product company.